Rotary concentrator, classifier, and separator.



H. HERTZBERG. ROTARY GDNCENTRATOR, CLASSIFIER, AIID SEPARATOR. APPLICATION FILED JUNE I0| I9I5- RENEW-ED JUNE 29.1817.

Patented Aug. 14,1917.

4 SHEETS'S HEET 1.

INVENTOR.

H. HERTZBERG. ROTARY CONCENTRATOR, cussmzn, AND SEPARATOR. APPL|CAT|0P FILED JUNE 10; 915- RENEWED JUNE 29| T917- 1 ,236,839 Patented Aug. 14, 1917.

4 SHEETS-SHEET 2r WITNESSES: INVENTOR.

H HERTZBERG.

ROTARY CONCENTRATOR, GLASSIFIER, AND SEPARATOR. I I APPLICATION FILED IUNIIZ l0, 1951 RENEWED JUNE 2911917. 1,236,839, Patented Aug. 14, 1917.

4 SHEETS-SHEET 4- IN V EN TOR.

HARRY HERTZBERG, OF BROOKLYN, NEW YORK.

ROTARY CONCENTRATOR, CLASSIFIER, AND SEPARATOR.

Specification of Letters Patent.

Patented Aug. 14, 1917.

Application filed June 10, 1915, Serial No. 33,342. Renewed June 29, 1917 Serial No. 177,802.

To all whom it may concern:

Be it known that I, I'IARRY HERTZBERG, a citizen of the United States, and resident of borough of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Rotary Concentrators, Classifiers, and Separators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to concentrating, classifying and separating machines of the rotary type for concentrating, classifying and separating ore, coal, mica, sand, placer dirt, mineral or material that requires concentrating, classifying or separating by the wet or dry method, and has for its object the separation of the values or concentrated mineral from the gangue or waste when concentrating; to make a distinct separation of the material to anydesired classified size when classifying; and to make a distinct separation of any two materials having a difference in specific gravity when separating; upon a rotating inclined flat disk having curved rifHes with an irregular working surface which has the effect of a large number of miners pans as each depression on the working surface of the riffie acts the same as the miners pan. In order to mount a great number of riflles I use the unique method of ending the inner ends of some of the riffies at predetermined points around the central hollow opening, the shorter rifiies feeding the longer ones and the riffies ending at the central hollow opening doing the final discharging into the hollow shaft.

This invention contemplates and embodies a structural feature, for the above purpose, which is simple and inexpensive in first cost and maintenance, requiring a minimum amount of power, water, or air (when working dry), utilizing a minimum amount of floor space and is light in weight.

The object of this invention is to avoid the difiiculty experienced in machines that are operated by centrifugal, vibrating or oscillating means; to produce a machine that will work on material having a great range in sizes from very coarse to very fine, and having a great range in specific gravities from very heavy to the very lightest.

A further object of'the invention is to produce a machine that can be installed in a mill to be used as a concentrator, classifier, separator or as a combined concentratorclassifier, concentratorseparator, classifierseparator, that can be easily installed and adjusted without the use of heavy foundations and expensive changes, taking an unclassified feed, concentrating, classifying or separating as desired.

And still a further object of this invention is to produce a machine that will concentrate, classify and separate material Wet when fed with water and dressed with water, or dry when fed dry and dressed with compressed air.

In carrying out my invention I emplo the novel construction hereinafter fully described and claimed.

In the drawings accompanying these specifications, like parts in the several views have been given the same reference numbers.

Figure 1, is a front view of the machine in operation, working wet.

Fig. 2, is a side view of the same.

Fig. 8, is an enlarged plan view of the square riflies.

Fig. 4, is a riflles.

Fig. 5, is a sectional view of a riflle made of angle brass.

Fig. 6, is a sectional view of a rifHe made of blLSS or any suitable material in the shape of a Fig. 7 is an enlarged plan view of flexible riffies with corrugated working surfaces.

Fig. 8, is a sectional view of Fig. 7 on the line A, B.

The inclined disk 1 is secured to the hollow shaft 2, which revolves in the bearing 3, said bearing being adjustable to any an gular position by the hand wheel 4, which is secured to the screw 5. The curved riifies 6 are secured to the upper surface of the disk by any suitable means and are so made that the inner working surfaces of the curves of said rifiies have irregular surfaces and end at the predetermined points 7, 8, and 9, around the central hollow opening 10. The bevel gear 11 is secured to the back of the disk 1 and is revolved by the small bevel sectional View of the square gear 12, which is secured to the shaft 14,

which has its bearings on the steel frame 17 and is driven by the pulley 15, which is secured to said shaft, and pulley 16, is the loose pulley. The dressing pipes 18, and 19, which are axially adjustable, are connected to the pipe 20, which extends up through the central hollow shaft and is secured to the main bearing 3 by means of lock nut 21. ater or air under pressure is supplied to the dressing pipes from any suitable source by means of the flexible pipe 22, while the water or air pressures are regulated by means of the valves 23 and 2 1 for dressing and spraying the mineral, and are indicated by the pressure indicator 25. The feed box 26,

issecured to the frame arm 33, by means of the upright adjustable bars 27 and -2F, which causes the feed box to be placed in any desired angular position and it is secured in said position by means of the bolts 29, and 30. The flexible baffle plate 31 is secured to the inside of the feed box to prevent the fine slimes from floating.

The concentrate launder Mis substantially secured to the frame 17, at an angle and acts as conveying means for the concentrates or coarse material 35 into the tank 36.

The inclined shaking discharge launder 37, has two compartments, the upper compartment 38, and the lower compartment 39, and are separated by the screen Q0. The pivot support a1, is near the lower end of the launder; the pawl 452, at the upper end of the launder is actuated by the star shaped cam 43, that is revolved by the pulley it,

' which is driven by the belt 45, from the pulley 15. The washed material i6, that is too coarse to pass through the screen a0, is discharged into tank 4C7, and the material 18, which passed through the screen 10, is discharged into the tank 49.

In Fig. 3, the curved center lines CD, EF, GH, represent the centers of the riflies along predetermined curved lines, 51. 52, and 53, are rifiles, the ends of which extend to different points around the central hollow opening 10, and beginning at a common line, I-K, at the periphery of the flat disk, the riffles have a series of flat surfaces 55 and angles 56 along their entire working surfaces and are secured to the pan by means of the nails or screws 57.

In Fig. 4., the square rifile 58. is secured to the disk that is made of wood or other suitable material 60, which is covered by linoleum or sheet rubber 59 to prevent absorption. 61, is the lighter material which is superposed on the heavier material 62, stratification takes place along the rifile when in operation.

In Fig. 5, the angle ritl'le 63is secured to the disk, the lighter material 64. is superposed on. the heavier material 65, as stratification takes place along the riffie in operation.

In Fig. 6, the Z ritlle 66 is secured to the disk, the lighter material 67 is superposed on the heavier material 68, as stratification takes place along the rifile in operation.

In Fig. 7, the rifiles 69, 70. 71 are made of flexible material, such as rubber, and have a uniform cross section before being secured to the disk by the nails 72.

In driving the nails through the flexible riflles, the rifiies expand in close proximity around the nails, producing a series of corrugations 73, along the flat working surface 74:.

In Fig. 8, the flexible corrugated rittles 69, 70, 71 are secured to the disk by means of the nails 72, which produce the corrugated working surfaces 73. The light material '75 is superposed on the heavier material 76, as stratification takes place along the rifiles in operation.

In operation the power applied to the pulley 15, causes the disk to revolve slowly in the direction of the arrow shown in Fig. 1. The material to be treated is fed from the feed box 26 upon the disk at the extreme right hand side; the material is held by the rilfles, and as the water is passed over it stratification takes place, the slow rotary motion of the disk carries the heavier material to the center of the disk where it is discharged into the central hollow shaft. The lighter material is washed down across the riffies until it is free from the particles of material that must go to the center of the disk and is discharged upon the screen 10; the coarse material that remains on the screen is shaken down into the tank i7, while the fine material that passes through the screen is discharged into the tank 49.

The action of the machine is shown in I Fig. 1, in which Stratification has taken place and the various materials are held in their respective zones by the dressing water: as indicated by the small arrows, its action is continuous as long as the feed and water are not interrupted; the coarse dark marks represent the mineral or coarse zone; the coarse light marks represent the gangue or coarse light zone, and the fine dark marks representthe fine mineral or slime zone.

hen operating as a concentrator on mineral the angle of the disk and the water pressure are adjusted, the sand or pulp is fed into the feed box 26, the clean concentrates are discharged into the tank 36; the clean gangue or tailings, free from mineral, are discharged into the tank 17, the fine overflow is discharged into the tank 49, and is fed to the next machine to recover the fine mineral.

hen operating as a classifier the angle of the disk and the water pressure are adjusted, the material is fed into the feed box 26, the coarse classified, product is discharged into the tank 36, the medium classified prodnot is discharged into the tank 47, and the fine classified product is discharged into the tank L9; if two classifications are desired the.

screen 40 is removed, then the coarse classified product goes into tank 36 and the fine classified product goes into tank 49 and tank 4-7 remains empty. This method is used in cyanid mills operating with tube mills.

\Vhen operating as a separator, the angle of the disk and the water pressure are adjusted, the concentrated mineral is fed into the feed box 26, the mineral having the greatest specific gravity is discharged into the tank 36, the mineral having the lowest specific gravity is discharged into the tank 4:9, and middlings into tank 47.

Various combinations of concentration, classification, separation and sizing can be worked on this machine, depending upon the nature, grade, size and character of the ore, sand or material to be treated eflciently.

It is not to be understood, however, that the invention is limited in this respect, to any material or form as shown and described, as it will be evident that many changes may be made, in details of construction shown and described without departing from the scope of the invention.

Having thus described my invention, what I claim and desire to protect by Letters Patent of the United States is:

1. In a rotary concentrator, classifier and separator an inclined disk rotating upon a central hollow shaft, a plurality of flexible rifles secured to said disk and securing means causing the rifle to expand at inter vals producing a corrugated working surface.

2. In a rotary concentrator, classifier and separator an inclined disk rotating upon a central hollow shaft, a plurality of flexible curved rifles secured to the disk, securing means causing the rifles to expand at intervals producing corrugated working surfaces, said rifles commencing at a common line on the periphery of the disk and ending at different points around the center opening.

3. In a rotary concentrator, classifier and separator an inclined disk, rotating upon a hollow shaft, a plurality of curved rifles secured to the disk, securing means causing the rifles to expand at intervals producing corrugated working surfaces, said rifles commencing at a common line on the periphery of the disk, and ending at various given points around the center.

4. In a rotary concentrator, classifier and separator an inclined rimless pan rotating upon a central'hollow shaft, a plurality of rifles secured to the pan, said rifles having working surfaces consisting of a series of flat surfaces along its working surface, said rifles commencing at a common line on the periphery of the rimless pan and ending at various given points around the center.

5. In a rotary concentrator, classifier and separator an adjustably inclined rimless pan rotating upon a central hollow shaft, a plurality of curved rifles having corrugated working surfaces secured to said pan, means for rotating the pan, means for adjusting the angle of the pan, and means for supporting the pan.

6. In a rotary concentrator, classifier and separator an inclined disk revolving on a hollow shaft, flexible rifles secured to said disk, securing means causing the rifles to expand at intervals producing corrugated working surfaces; said rifles commencing at a common line on its periphery, and terminating at and around the central hollow opening, provided with means for revolving the disk and means for adjusting the tilt of same.

7 In a rotary concentrator, classifier and separator an inclined disk revolving on a hollow shaft, flexible rifles secured to said disk, securing means causing the rifles to expand at intervals producing corrugated working surfaces; said rifles commencingat a common line on its periphery and terminating at and around the central hollow opening, provided with means for revolving the disk, means for adjusting the tilt of the disk and means for supporting the same.

8. In a rotary concentrator, classifier and separator an inclined disk revolving on a hollow shaft, flexible rifles secured to said disk, securing means causing the rifles to expand at intervals producing corrugated working surfaces; said rifles commencing at a common line on its periphery and terminating at and around the central hollow opening, provided with means for revolving the disk, means for adjusting the tilt of the disk, means for supporting the same and means for feeding the disk.

HARRY HERTZBERG.

I/Vitnesses:

SALLIE MAY COBB, M. J. SCHNEIDER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

